Ontogeny of the swim bladder of the Plainfin Midshipman, Porichthys notatus (Percomorphacea: Batrachoidiformes).

Autor: Vieira LS; Laboratório de Ictiologia, Departamento de Zoologia, Universidade Federal do Rio Grande do Sul., Av. Bento Gonçalves 9500, Porto Alegre, RS, Brazil. Electronic address: lolly.vieirasa@gmail.com., Vaz DFB; Museum of Comparative Zoology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, United States; Guam Ecosystems Collaboratorium Biorepository, Guam EPSCoR, University of Guam. 303 University Drive, UOG Station, Mangilao, Guam 96923, United States., Netto-Ferreira AL; Laboratório de Ictiologia, Departamento de Zoologia, Universidade Federal do Rio Grande do Sul., Av. Bento Gonçalves 9500, Porto Alegre, RS, Brazil.
Jazyk: angličtina
Zdroj: Zoology (Jena, Germany) [Zoology (Jena)] 2023 Aug; Vol. 159, pp. 126102. Date of Electronic Publication: 2023 Jun 19.
DOI: 10.1016/j.zool.2023.126102
Abstrakt: The batracoidid Plainfin Midshipmen Porichthys notatus Girard has been extensively studied due to the sound production abilities and specializations of its swim bladder. The present study describes three-dimensional variations of the morphology of the swim bladder and sonic muscles of P. notatus during its post-hatch larval development, with the use of three-dimensional computed tomography. This study also includes descriptions of the relative position of the swim bladder to other visceral organs. The swim bladder, digestive tract, and liver were already present in the smallest examined specimens (5.9 mm; newly hatched larvae) along with the yolk sac. In the smallest specimens, the digestive tract is straight, but from 7.1 mm TL, the digestive tract forms the first intestinal loops, and at 25.5 mm TL, a second intestinal loop. In smallest specimens, the swim bladder is oval, but at 7.1 mm TL, the anterior margin starts invaginating, forming a pair of anterior lobes. The first appearance of the intrinsic sonic muscles in swim bladder occurs at 13.1 mm TL. Additionally, we provide comparisons between the shape of the swim bladder of P. notatus and other species. The shape of the swim bladder of P. notatus and other members of Porichthyinae have an ovoid posterior region with two anterior lobes and differs from the cordiform or semiconected/bilobed the swim bladders observed in the other Batrachoididae.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier GmbH. All rights reserved.)
Databáze: MEDLINE
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